Automatic window-ventilator



'v. M. ALLEN.

AUTOMATIC wmnow VENTILATOR.

APPLICATION FILED APR.5, I919.

Patehted Apr. 6, 1920.

5 SHEETS-SHEET 1.

' for/Milieu V. M. ALLEN.

AUTOMATIC WINDOW VENTILATOR.

APPLICATION FILED APR.5, 1919.

' Patented Apr. 6, 1920.

5 SHEETS-SHEET 2.

V. M. ALLEN.

AUTOMATIC WINDOW VENTILATOR. APPLICATION men APR.5, 1919.

Patented Apr. 6, 1920.

5 SHEETS-SHEET 3.

zivyn/iol.

l/vbzw' W file/a v. M. ALLEN.

AUTOMATIC WINDOW VENTILATOR. APPLICATION FILED APR-5, I919.

1,335,929. Patented Apr. 6, 1920 5 SHEETSSHEET 4.

V. M. ALLEN.

AUTOMATI'C WINDOW VENTILATOR.

' APPLICATION FILED APR. 5, 1919. I 1,335,929 Patented Apr. 6, 1920. y 5SHEETS-SHEET 5. I

-172 z/enion To all whom it may concern:

UNITED STATES PATENT OFFICE.

.vIc'ron. M. ALLEN, or wAvnnLY, new YORK.

AUTOMATIC WINDOW-VENTILATOR.

Specification of Letters Patent. iPatented Ajpl. 6, 1920- Applicationfiled April 5. 19l9. Serial No. 287.858.

Be it known that I, Vroron M. ALLEN, a citizen of the United States, anda resident of Waverl in the county of Tioga and State of how York, haveinvented certain new and useful Improvements in AutomaticWindow-Ventilators, of which the following is a specification- Thisinvention relates to automatic window ventilators, and has for itsobject to provide a device of this kind with improved means foradjusting the panels of the ventilator so that they may be partially oren-' tirely closed by a high wind but will be au tomatically openedagain to -a predetermined extent after the wind has subsided.

A further object is to construct the counterbalance for the panels insuch a way that the leverage of said counterbalance will increase as theweight of the panels increase in being moved from closed to openposition.

Another object is to provide means adapted to be operated from theinside of the window for setting limits for the automatic movements ofthe panels whereby the-latter may be initially adjusted to normallystand open at any desired extent and to close entirely or to. anydesired degree under the action of the wind. v

The invention also contemplates-the use of a sash. in connection withthe ventilator and the provision of means for locking said sash.

at different adjustments so 'as to cover the ventilator to any desireddegree for further determining the amount of air admitted according toclimatic conditions.

Another object is to provide temperature controlled means forautomatically actuating the ventilator panels so as to move them towardclosed position when the temperature drops to a predetermined extent andto move them back again to normal position tion.

In the ac ompanying drawings, wherein similar reference characters areused to deslgnate corresponding parts throughout the several views-Figure 1. is an elevation of a window ven-- tilator constructedsubstantially in accordance with the present invention, looking at thesame from the outside.

Fig. 2 is. a broken vertical section through the upper part of the frameof the ventilator to show the rock shaft for controllin the movements ofthe panels.

from the inside.

Fig. 4. is a broken top edge view of the ventilator frame to show thegrooves to receive the sash and the screen.

Fig. 5 is a central vertical section through the ventilator, showing thepanels inopen position and the sash partially lowered.

Fig. 6 is a vertical section taken through the upper portion of theframe of the ventilator and the center of-the adjustable stops or slidesfor regulating the extent to which athe panels may be opened.

Fig. 7 is a detailed view of the gearand 1 rack for adjusting the lowerstop or slide. Fig. 8 is a detailed perspective one of the panelsupports. c

Fig. 9 is a detailed view of the gear and rack for adjusting the upperstop or slide which controls the extent of movement of the panels.

v Fig. 10 is a detailed elevation of the easing for the adjustable stopsor slides looking at the same from the inner face thereof which ispresented to the frame of the ventilator, and showing the means forretaining said slides in set positions.

Fig. 11 is a broken inside elevation of a modified. form of ventilatorprovided with temperature controlled means'for actuating the panels.

Fig. 12 is a broken sectional view through the part of the frame inwhich the temperature controlleddevice is arranged the section beingtaken vertically from side to side of the frame.

Fig. 13 is a section taken vertically from front to back through thesame parts.

Fig. 14 is a detailed sen-tion vertically through the mercury tube andfloat supported weight which constitute essential parts of thetemperature controlled device; and

Fig. 15 is a detailed cross section through one of the edges-of theventilating openings in the frame, showing the weatherproof ig. 3 is anelevation of the ventilator view of r the outer face of the panel, atongue 16 to engage the upper edge. of the panel; and a of each paneloverlaps the upper edge of the next lower panel on the outside whenclosed, and said panels are pivoted nearer their upper edges so' thatthey will be normally closed by gravlty.

The ends of the panels are connected together below their pivots 5 bystrips 6 by which all of the panels are actuated in uni:

son. Each of these strips is provided with an inwardly turned flange 7,Fig. l5,'which engages a groove 8 in the side ofthe ventilating opening2, when the panels are closed, for keeping out the weather. The upperedge of the ventilating opening overlaps the upper edge of the toppanel, as at 9, Fig. 5, and has a horizontal groove 10 in its inner faceto receive an outwardly projecting packing strip 11 on the outer face ofthe upper edge portion of the top panel, when the latter is closed, inorder to make the top as well as the side of the ventilator weath--erproof. -The lower edge of the bottom 1 panel when closed overlaps asill 12, at the bottom of the ventilating opening 2, and fits looselyenough to permit any water which may -'be forced through between theover-' lapping panels by a heavy wind to run out and be discharged onthe outside of the ventilator instead of entering the room.

As illustrated in Fig. 8 each of the supports 4 for the transparentpanels 3- is pref-' erably made of a single piece of sheet metal bent toform a base portion 13 to cover the end of the panel, flanges 14 and 15to engage the inner face, lower edge and part of pivot lug 17, formed asan extension of the base 13 between the flanges 14 and 15: The tongue 16is bent out of the way when the panel is inserted into the-support, andafter ward turned back to the position shown for retaining said panel inthe support.

The stripsfi are connected at their upper ends'respectlvely to'crankarms .18 depending. froma rock shaft 19 journaled in suitable hinge lugs20 and housed in a recess 21- in the upper portion of the frame'over theopening 2, as shown, in F ig'. 2. On one end of the rock shaft'there isfixed a lever 22 extending beyond the inner face of the frame andcarrying a weight 23 for counter-balancing :the panels and yieldinglyholding them open against the force of gravity;

' 26 or the like. 7

the weight on the lever provldes for m-,

which, as has been already explained, serves to hold themnormallyclosed. '-The weight 23 is vertically adjustable on-a'c arrier2l, as by engaging screw threads 25, on the latter, or otherwise, andsaid carrier is horizontally adjustable along the lever 22, beingretained in adjusted position bya set screw This double adjustment ofcreasing leverage asthe panels are opened and said lever swingsdownward, so as to offset the increased weight of the panels as they areswung upwardly toward fully opened position, as indicated in Fig. 5. In

this figure it will be seen that the weight is I farther removed fromthe fulcrum on the rock shaft 19 measuring in a horizontal line, thanwhen the lever isho-rizontal as in Fig. 6. The weight 23 may be set tonicely counterbalance the panels so that a slight wind will close them,as in a hospital where it s.

desirable to keep the patients out of any draft, or said weight may 'beadjusted to hold the panels open against all but strong winds so as topermit the air to enter when only moderate winds are blowing, whichwould be desirable in gymnasiums where persons are exercising, forinstance.

It is desirable to limit the movements of the panels, as will be readilyappreciated, so that they will not be entirely opened or c'osed undervarying climatic-conditions'.

This may be done in the present invention through the use of a pair ofadjustable slides orstops 27 and 28, the former adapted to limit theupward movement of the lever 22 'and consequently the extent of closingof the panels, while the latter slide 28 is designed to limit thedownward movement of the lever and the extent of opening' of the panels.These slides are mountedin a 'cas ing 29 which is suitably secured tothe inner face of the frame 1,' and they are retained in adjustedposition by leaf springs 30 interposed between the edges of the slidesand The casing has a-slot31 through which the lever 22'extends.The'slide 27 also has a slot 32 through which the lever extends and intowhich the head 33- or stop proper on e I 1 l 0 the sides ofthe casing,as shown 1n Fig; 10.

the slide 28 projects. The slide 28 has a slot 34 registering with theslot 32 but of differ ent width.

' The slide 27 has also {a head or stop proper 35, which may projectinto the slot 31 in the casing 29. The slides may be adjusted verticallyby means of pinions or gears. 36 and 3-7 meshing respectively with racks38 and 39 on opposite edges of the .slots 32- and 34. nThe" gear 36. ismounted on a tubular spindle 40.journaled at 41 in the casing 29, andhaving a milled head 42 for rotating said spindle and gear. The gear 37is mounted on a spindle 13 running through the hollow spindle 4:0 andcarrydown in the recess 5.6 by means the frame 1. recess there isadjustably arranged a vert1-' 1 ing a milled head 44 for rotating' saidgear. In this way the upper and lower stops 33 and 34 may be readilyadjusted by rotating the corresponding heads 42 and 4.4. The lever 22may be provided with a buffer 45 of rubber or other suitable material toprevent direct contact between the said lever and the .stops 33 and 34and eliminate Objectionable noise of metal striking against metal whichwould be caused thereby. Any or all other striking parts of the devicemay also be equipped with bufiers or sound deadeners, if desired.

At the inner edge of the opening 2 grooves 46 and 47, Figs. 4 and 5, areprovided for the insertion of a sash 48 and a screen 19, respectively.It will be understood that either the screen or sash or both may be usedor not as maybe desired. a When the sash is used it may be fastened atany point by a wedge-shaped clamp block 50, having 52 in a metal frame53 surrounding the opening 2 in the frame 1, as also shown in- I 59 onthe panels, so that sudden temperature 'changes w ll not cause thelatter to be Fig. 3.

Referring to structure of the ventilator thereshown is the same asalready described except that -tion', what I claim as new and desire toadditional mechanism isprovided for antomatically actuating thepanels-according to the temperature. The rock shaft 19 is provided withan extension 54: having a crank arm 55 housed in the upper end por tionof a vertical recess 56 in the side of In the lower part of said caltube 57 containing a suitable amount of mercury rod 59 is supported onthesurface of the mercury by a float 60, and the upper end of saidweight is connected to the crank arm ,55 by a coiled spring 61 andwire62. The

tube 57 may be adjusted bodily up and of a spindle 63 carrying a milledknob 64 at its outer end and a gear 65 on-its innerend portion, saidgear meshing with a rack 66 on the tube. I

By this means the tube may be adjusted as desired to correspond withnormal temperatures, so that when the temperature fluctuates the rise orfall of the mercury will raise or lower. the weight 59 and act upon therock shaft- 19 through the spring 61 and wire ventilator toward open orclosed position.

nicely by the counterbalance 23 and weight 59 that the raising of saidweight will bring the counterbalance 23 into play to move the panels ofthe weight 59 will exert suflicient pull on the arm 55 to Y. overcomethe counterbalance .matically closed protect sleepers from itaining.portion of the tube 57. A trans- -'observed ontheposition of said arm.The

Figs. 11 to 14, inclusivepthe 58. A weight} in, the form of weightadjustable vertically and horizon- 62, to move the'panels of the -'tionwith-a panelpivoted to swing on a The rock shaft is normally balanced sotoward open position, while the fall and swing the panels toward closedposition. i In this way a drop-in temperature will automatically resultinfully or partially closuseful in Northern States where considerablechanges in temperature occur during the night, and the'ventilator may beautothecold and opened again to admit air when w the temperaturemoderates.

- 'The spindle 63 may extend through i a metal plate 67 secured to theinner face of the frame 1. The lower end portion of the recess 56 is incommunication with the outerside of the, frame through a bore oropenm'g68, Fig. '13, so that the outsidetemperature may act directlyupon the mercury con-.

parent panel 69 is preferably placed on the inside of the frame 1opposite the crank arm 55, so that-when the mercury tube is adjusted,the result of such adjustment may be spring 61 cushions the action ofthe weight broken.

Having thus fully described my invensecure by Letters Patent is 1. In awindow ventilator, the combination with a movable panel, of means forcounterbalancing said panel for normally holding under the action ofhigh winds, said counterbalancing means exerting a greater levera e asthe panel becomes farther open for tide purposespecified.

In. a window ventilator, the combination-with a panel pivoted to swingon a horizontal axis, of a rock shaft having a crank arm, means ofconnection between said crank arm and the panel, a lever secured. to,said rock shaft, and a counterbalancing weight adjustable vertically onsaid lever for tally on said lever for the purpose specified.

4. In a window ventilator, the combina- 5. In a window ventilator, thecombina- 130 it in open position but permitting it to close tion with apanel pivoted to swing on a horizontal axis, of a rock shaft having acrank both diI'GOtlOllS."

1 arm, means of. connection between said crank arm and of the panel, alever secured to said rock shaft, a counterbalancing weighton saidlever, and adjustable stops for limitin the movement of said lever in6.'In a window ventilator, the combination with a panel pivoted to swingon a horizontal axis, of a rock shaft having a crank arm, .means ofconnection between said crankarm and the panel,'a lever secured to saidrock shaft, a counterbalancing Weight on said lever, adjustable stopsfor limiting the movement of the lever in opposite directions, racks onsaid stops, and. concentric gears for actuating said racks.

7. In a window ventilator, the combination with a'panel pivoted to swingon a horizontal axls, of a rock shaft having a crank arm, means ofconnection between said crank arm and. the panel, a lever secured tosaid rock shaft," :1 counterbalancing weight on said lever, adjustablestops for,

limiting the movement of the lever in oppo site directions, racks onsaid stops, concentric gears for actuating said racks, a spindle forrotating one of said gears, and a tubular spindle surrounding the firstmentioned spindle for rotating the other gear."

8. In 'awindow ventilator, the combinationwith a panel pivoted to swing'on a horizontal axis, of a rockshaft having a crank arm, means ofconnection between sa1d crank arm and the panel, a lever sefcured tosaid "rock shaft, a counterbalancing weight on said lever, an adjustableslide I havinga slot through which the lever extendsand which serves asa stop for limiting the movement of the lever in one direction, andanother adjustable slide havinga justing the slides 10. In a windowventilator, the combinetion w th a panel p voted to swing on a hor?portion arranged in the slot of the first slide to. serve as a stop forlimiting the move ment of the lever in the opposite direction. 9. In awindow ventilator, the combination with a panel pivoted to swing on ahori-' zontal axis, of a rock shaft having a crank arm, means ofconnection between said crank arm and the panel, a lever secured to saidrock'shaft a counterbalancing weight on said lever, a11- adjustableslide having a .slot through which the lever extends and which serves asa stop for limiting the movement ofthe lever-in one direction, anotheradjustable slide adapted to serve as a stop 'for limiting the movementof the lever in" the opposite direction, the second slide also having aslot in line with the slot in the first slide, racks on opposite edgesof'said slots. and gears meshing with said racks for adzontal axis, of arock shaft having a .c'rank arm, means of connectlon between sa1d cran'karm and the panel, a lever seeured'to said rock shaft, acounterbalancing weight on said lever, adjustable slides carrylng stopsfor limitingthe movement of the lever,

a casing for housing said slides, means for adjusting the slidesin thecasing, and leaf springs interposed between the slides and.

tween said weight and thepanel for movingthe latter toward open orclosed position as the mercury rises or falls.

12. In a window ventilator, the combina= tionrwith a movable panel, of amercury tube, a weight in said tube, a float supporting the weight onthe surface of the mer cury, operative means of connection between saidweight and the panel for moving the latter toward open or closedposition as the mercury rises or falls, and means for adjusting themercury tube vertically for the purpose specified.

13. In a window ventilator, the combina-- tion with a movable panel, ofmeans for counterbalancing said panel for yieldingly holding it in openposition, a mercury tube, a float on the surface of the mercury in thetube, and means of connection between the floatand counterbalancingmeans, including a coiled spring for the purpose specified.

14. In a window ventilator,-the 'combination with a frame, of aplurality of "panels pivoted in said frame, strips pivotally connectingthe panels together for causing 'them to move in unison, and flanges onsaid strips to overlap the frame, when the panels are closed," for thepurpose specifiedn 15. In a window ventilator, the combination with aframe having grooves in its edges, of a plurality of panels pivoted inSaid frame, strips pivotally connecting the panelstogether'for causingthem to move in unison, and flanges on said strips to overlap the edgesof the frame and engage in the grooves therein, "whenthe panels areclosed, for the purpose specified,

16. In a window ventilator, the combine tion with a frame having anundercut recess in its upper edge with a groove in its'face,

of a panel pivoted'in the frame to swing on a horizontal axis and havingits upper edge adapted to enter said recess in the frame when the panelis closed," anda strip arranged along the upper edge'of the panel toengage the groovein the face of the recess for the purpose specified.

VICTOR'M,

